:root {
  --site-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-site-font="anthropic-serif"] {
  --site-font-family: "Roboto Slab", "Iowan Old Style", "Palatino Linotype", "Songti SC", STSong, serif;
}

html[data-site-font="anthropic-sans"] {
  --site-font-family: Roboto, "Avenir Next", Avenir, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-site-font="system"] {
  --site-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-site-font="dyslexic"] {
  --site-font-family: "Atkinson Hyperlegible", OpenDyslexic, Verdana, "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-site-font] body,
html[data-site-font] button,
html[data-site-font] input,
html[data-site-font] select,
html[data-site-font] textarea {
  font-family: var(--site-font-family);
}

html[data-site-font="dyslexic"] body {
  letter-spacing: 0.012em;
  word-spacing: 0.025em;
}

.site-page-loader {
  align-items: center;
  background: var(--global-bg-color, #fff);
  color: var(--global-text-color, #111);
  display: flex;
  inset: 0;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  transition:
    opacity 120ms ease-out,
    visibility 0s linear 120ms;
  visibility: hidden;
  z-index: 100000;
}

html.js[data-page-loading="true"] .site-page-loader {
  opacity: 1;
  pointer-events: auto;
  transition-delay: 0s;
  visibility: visible;
}

.site-page-loader__text {
  animation: site-thinking-pulse 1.15s ease-in-out infinite;
  color: inherit;
  font-family: var(--site-font-family);
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 500;
  letter-spacing: 0.015em;
}

.site-page-loader__text::before {
  content: "Thinking...";
}

html[data-loading-copy="loading"] .site-page-loader__text::before {
  content: "Loading...";
}

html[data-loading-copy="thinking-zh"] .site-page-loader__text::before {
  content: "正在思考...";
}

html[data-loading-copy="loading-zh"] .site-page-loader__text::before {
  content: "正在载入...";
}

@keyframes site-thinking-pulse {
  0%,
  100% {
    opacity: 0.42;
  }

  50% {
    opacity: 1;
  }
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .site-page-loader {
    background: var(--global-bg-color, #111);
    color: var(--global-text-color, #f3f3f3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-page-loader {
    transition: none;
  }

  .site-page-loader__text {
    animation: none;
  }
}